From 9f8023a869dabf55ed91b6b73b133c4ea0232bc1 Mon Sep 17 00:00:00 2001 From: V Sowmya Date: Tue, 28 Feb 2017 17:52:05 +0530 Subject: [PATCH] drivers/intel/mipi_camera: Add MIPI CSI camera SSDT generator Add SSDT generator for MIPI CSI camera to create ACPI objects used by the Intel kernel drivers. * SSDB: Sensor specific database for camera sensor. * PWDB: Power database for all the camera devices. * CAMD: ACPI object to specify the camera device type. BUG=b:36580624 BRANCH=none TEST=Build and boot poppy. Dump and verify that the generated SSDT table has the required entries. Change-Id: Ief9e56d12b64081897613bf1c7abcdf915470b99 Signed-off-by: Rizwan Qureshi Signed-off-by: Sowmya V Reviewed-on: https://review.coreboot.org/18967 Reviewed-by: Martin Roth Tested-by: build bot (Jenkins) --- src/drivers/intel/mipi_camera/Kconfig | 7 ++ src/drivers/intel/mipi_camera/Makefile.inc | 1 + src/drivers/intel/mipi_camera/camera.c | 99 +++++++++++++++++++ src/drivers/intel/mipi_camera/chip.h | 108 +++++++++++++++++++++ 4 files changed, 215 insertions(+) create mode 100644 src/drivers/intel/mipi_camera/Kconfig create mode 100644 src/drivers/intel/mipi_camera/Makefile.inc create mode 100644 src/drivers/intel/mipi_camera/camera.c create mode 100644 src/drivers/intel/mipi_camera/chip.h diff --git a/src/drivers/intel/mipi_camera/Kconfig b/src/drivers/intel/mipi_camera/Kconfig new file mode 100644 index 0000000000..d69a61ebb0 --- /dev/null +++ b/src/drivers/intel/mipi_camera/Kconfig @@ -0,0 +1,7 @@ +config DRIVERS_INTEL_MIPI_CAMERA + bool + depends on HAVE_ACPI_TABLES + default n + help + MIPI CSI I2C camera SSDT generator. Generates SSDB and PWDB + structures which are used by the Intel kernel drivers. diff --git a/src/drivers/intel/mipi_camera/Makefile.inc b/src/drivers/intel/mipi_camera/Makefile.inc new file mode 100644 index 0000000000..85f67b2606 --- /dev/null +++ b/src/drivers/intel/mipi_camera/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_DRIVERS_INTEL_MIPI_CAMERA) += camera.c diff --git a/src/drivers/intel/mipi_camera/camera.c b/src/drivers/intel/mipi_camera/camera.c new file mode 100644 index 0000000000..7752f0aff3 --- /dev/null +++ b/src/drivers/intel/mipi_camera/camera.c @@ -0,0 +1,99 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include "chip.h" + +static void camera_fill_ssdt(struct device *dev) +{ + struct drivers_intel_mipi_camera_config *config = dev->chip_info; + const char *scope = acpi_device_scope(dev); + struct acpi_i2c i2c = { + .address = dev->path.i2c.device, + .mode_10bit = dev->path.i2c.mode_10bit, + .speed = I2C_SPEED_FAST, + .resource = scope, + }; + + if (!dev->enabled || !scope) + return; + + /* Device */ + acpigen_write_scope(scope); + acpigen_write_device(acpi_device_name(dev)); + acpigen_write_name_string("_HID", config->acpi_hid); + acpigen_write_name_integer("_UID", config->acpi_uid); + acpigen_write_name_string("_DDN", config->chip_name); + acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON); + + /* Resources */ + acpigen_write_name("_CRS"); + acpigen_write_resourcetemplate_header(); + acpi_device_write_i2c(&i2c); + acpigen_write_resourcetemplate_footer(); + + /* Mark it as Camera related device */ + acpigen_write_name_integer("CAMD", config->device_type); + + /* Create Device specific data */ + if (config->device_type == INTEL_ACPI_CAMERA_SENSOR) { + acpigen_write_method_serialized("SSDB", 0); + acpigen_write_return_byte_buffer((uint8_t *)&config->ssdb, + sizeof(config->ssdb)); + acpigen_pop_len(); /* Method */ + } + + /* Fill Power Sequencing Data */ + acpigen_write_method_serialized("PWDB", 0); + acpigen_write_return_byte_buffer((uint8_t *)&config->pwdb, + (sizeof(struct intel_pwdb) * config->num_pwdb_entries)); + acpigen_pop_len(); /* Method */ + + acpigen_pop_len(); /* Device */ + acpigen_pop_len(); /* Scope */ + printk(BIOS_INFO, "%s: %s address 0%xh\n", acpi_device_path(dev), + dev->chip_ops->name, dev->path.i2c.device); +} + +static const char *camera_acpi_name(struct device *dev) +{ + struct drivers_intel_mipi_camera_config *config = dev->chip_info; + return config->acpi_name; +} + +static struct device_operations camera_ops = { + .read_resources = DEVICE_NOOP, + .set_resources = DEVICE_NOOP, + .enable_resources = DEVICE_NOOP, + .acpi_name = &camera_acpi_name, + .acpi_fill_ssdt_generator = &camera_fill_ssdt, +}; + +static void camera_enable(struct device *dev) +{ + dev->ops = &camera_ops; +} + +struct chip_operations drivers_intel_mipi_camera_ops = { + CHIP_NAME("Intel MIPI Camera Device") + .enable_dev = &camera_enable +}; diff --git a/src/drivers/intel/mipi_camera/chip.h b/src/drivers/intel/mipi_camera/chip.h new file mode 100644 index 0000000000..d4b8c02818 --- /dev/null +++ b/src/drivers/intel/mipi_camera/chip.h @@ -0,0 +1,108 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __INTEL_MIPI_CAMERA_CHIP_H__ +#define __INTEL_MIPI_CAMERA_CHIP_H__ + +#include + +#define MAX_PWDB_ENTRIES 12 + +enum intel_camera_device_type { + INTEL_ACPI_CAMERA_CIO2, + INTEL_ACPI_CAMERA_IMGU, + INTEL_ACPI_CAMERA_SENSOR, + INTEL_ACPI_CAMERA_VCM, + INTEL_ACPI_CAMERA_PMIC = 100, +}; + +enum intel_power_action_type { + INTEL_ACPI_CAMERA_REGULATOR, + INTEL_ACPI_CAMERA_CLK, + INTEL_ACPI_CAMERA_GPIO, +}; + +struct intel_ssdb { + uint8_t version; /* Current version */ + uint8_t sensor_card_sku; /* CRD Board type */ + uint8_t csi2_data_stream_interface[16]; /* CSI2 data stream GUID */ + uint16_t bdf_value; /* Bus number of the host + controller */ + uint32_t dphy_link_en_fuses; /* Host controller's fuses + information used to verify if + link is fused out or not */ + uint32_t lanes_clock_division; /* Lanes/clock divisions per + sensor */ + uint8_t link_used; /* Link used by this sensor + stream */ + uint8_t lanes_used; /* Number of lanes connected for + the sensor */ + uint32_t csi_rx_dly_cnt_termen_clane; /* MIPI timing information */ + uint32_t csi_rx_dly_cnt_settle_clane; /* MIPI timing information */ + uint32_t csi_rx_dly_cnt_termen_dlane0; /* MIPI timing information */ + uint32_t csi_rx_dly_cnt_settle_dlane0; /* MIPI timing information */ + uint32_t csi_rx_dly_cnt_termen_dlane1; /* MIPI timing information */ + uint32_t csi_rx_dly_cnt_settle_dlane1; /* MIPI timing information */ + uint32_t csi_rx_dly_cnt_termen_dlane2; /* MIPI timing information */ + uint32_t csi_rx_dly_cnt_settle_dlane2; /* MIPI timing information */ + uint32_t csi_rx_dly_cnt_termen_dlane3; /* MIPI timing information */ + uint32_t csi_rx_dly_cnt_settle_dlane3; /* MIPI timing information */ + uint32_t max_lane_speed; /* Maximum lane speed for + the sensor */ + uint8_t sensor_cal_file_idx; /* Legacy field for sensor + calibration file index */ + uint8_t sensor_cal_file_idx_mbz[3]; /* Legacy field for sensor + calibration file index */ + uint8_t rom_type; /* NVM type of the camera + module */ + uint8_t vcm_type; /* VCM type of the camera + module */ + uint8_t platform; /* Platform information */ + uint8_t platform_sub; /* Platform sub-categories */ + uint8_t flash_support; /* Enable/disable flash + support */ + uint8_t privacy_led; /* Privacy LED support */ + uint8_t degree; /* Camera Orientation */ + uint8_t mipi_define; /* MIPI info defined in ACPI or + sensor driver */ + uint32_t mclk; /* Clock info for sensor */ + uint8_t control_logic_id; /* PMIC device node used for + the camera sensor */ + uint8_t mipi_data_format; /* MIPI data format */ + uint8_t silicon_version; /* Silicon version */ + uint8_t customer_id; /* Customer ID */ +} __attribute__((packed)); + +struct intel_pwdb { + char name[32]; /* Name of the resource required by the power + action */ + uint32_t value; /* The value to be set for the power action */ + uint32_t entry_type; /* The type of the current power action */ + uint32_t delay_usec; /* The delay time after which power action is + performed and this is in unit of usec */ +} __attribute__((packed)); + +struct drivers_intel_mipi_camera_config { + struct intel_ssdb ssdb; + struct intel_pwdb pwdb[MAX_PWDB_ENTRIES]; + enum intel_camera_device_type device_type; + uint8_t num_pwdb_entries; + const char *acpi_hid; + const char *acpi_name; + const char *chip_name; + unsigned int acpi_uid; +}; + +#endif